ChromaPlex is a unique blend of aquacultured, naturally-occurring phytoplankton, Particles range in size from 5 to 25 microns, providing a broad range for filter-feeding marine invertebrates, Contains essential amino and fatty acids, fiber, and high levels of carotenoids, Carotenoids have been shown to increase coloration intensity of blue, green, orange, yellow, and red pigments in tissues of filter-feeding marine invertebrates, May also be used to supplement and fortify live foods such as rotifers, daphnia, and brine shrimp, as well as larval fishes and invertebrates, Contains no yeast or sugars! SKU: RPS13536